Sources behind the free pages
37 sources. Links go to the original or the closest copy we could open.
A source's type tells you how to weigh it. An official record shows what an agency wrote, not that the content is true. A reference page such as an encyclopedia is a pointer to the real source, not the source. The handbook's source trails go further; these are the ones behind what you can read here.
50 U.S. Code section 3373 (Unidentified anomalous phenomena)
US Congress · Cornell Legal Information Institute · 2024AARO FY2025 Consolidated Annual Report on UAP
AARO · DoD/AARO (copy hosted by The Black Vault) · 2026-07Air Force press release terminating Project Blue Book, 17 Dec 1969 (Reading Room file asdpa1)
Secretary of the Air Force Robert C. Seamans Jr. · DoD ESD FOIA Reading Room · 1969-12-17Annual UFO report attributes most cases to common objects
NewsNation · NewsNation · 2024-11Biden says no evidence yet that unidentified flying objects were tied to China spying
Florida Phoenix (States Newsroom) · Florida Phoenix · 2023-02-16CIC memorandum on Kenneth Arnold interview (Frank M. Brown), 16 July 1947
Frank M. Brown, Counter Intelligence Corps, Fourth Air Force · Reproduced at ufology.patrickgross.org (original: US Army Air Forces) · 1947-07-16- Wikipedia contributors · Wikipedia · 2026
Col. Halt's 2010 affidavit and critique
Ian Ridpath · ianridpath.com · 2010-06Col. Halt's original memo (transcribed)
Lt. Col. Charles I. Halt (transcribed by Ian Ridpath) · ianridpath.com · 1981-01-13Encounter in Rendlesham Forest: The Inside Story of the World's Best-Documented UFO Incident
Nick Pope, John Burroughs, Jim Penniston · Thomas Dunne Books / St. Martin's · 2014- Buettner, Griffiths, Snell, Stilley · arXiv · 2024-03-13
Government explanation and MoD briefing
Ian Ridpath · ianridpath.com · 1985- Ian Ridpath (transcriber) · ianridpath.com · 1980-12-28
Identification studies of UFOs (Wikipedia)
Wikipedia contributors · Wikipedia · 2026If it's not a UFO, what is it?
Eddie Irizarry · EarthSky · 2020-12-15Kenneth Arnold UFO sighting (Wikipedia)
Wikipedia contributors · Wikipedia · 2026Mutual UFO Network (Wikipedia)
Wikipedia contributors · Wikipedia · 2026National Investigations Committee on Aerial Phenomena (Wikipedia)
Wikipedia contributors · Wikipedia · 2026- The Black Vault / DoD · The Black Vault · 2020-04-27
New Pentagon UAP files release details 'evidence of unintended injury to human observers'
IBTimes UK · IBTimes UK · 2026-09-20Office of the Inspector General of the Intelligence Community: accountability and whistleblower page
ODNI · odni.gov · 2025Original written statements by the participants
Ian Ridpath · ianridpath.com · 1980Penniston notebook and landed craft account
Ian Ridpath · ianridpath.com · 2010- DefenseScoop · DefenseScoop · 2022-12-19
Pentagon's UFO report finds over 700 new cases, with 21 the agency could not explain
ABC News (via ABC13) · ABC · 2024-11Preliminary Assessment: Unidentified Aerial Phenomena
Office of the Director of National Intelligence · ODNI · 2021-06-25Project BLUE BOOK - Unidentified Flying Objects
National Archives and Records Administration · NARA · n.d.Rendlesham Forest incident (English Wikipedia)
Wikipedia contributors · Wikipedia · 2026Rendlesham Forest UFO case (main page)
Ian Ridpath · ianridpath.com · 2026- Dr David Clarke · drdavidclarke.co.uk · n.d.
- Ian Ridpath · ianridpath.com · 2005
The Halt Memo - The Rendlesham Forest Incident
US Department of Defense FOIA release 97-F-1677 · The Black Vault document archive · 1997-09U.S. recovered non-human 'biologics' from UFO crash sites, former intel official says
NPR · NPR · 2023-07-27UAP Disclosure Act of 2023 (amendment text, Senate Democrats copy)
Sen. Schumer and Sen. Rounds · democrats.senate.gov · 2023-07UFOs and Roswell (SMU physics 'pseudoscience' course page)
SMU Physics faculty page (author not named on page) · Southern Methodist University · n.d.Unidentified flying object (Wikipedia)
Wikipedia contributors · Wikipedia · 2026Yang, UAP Disclosure legislation article, NYU J. Legis. & Pub. Pol'y vol. 27 no. 2
Yang · NYU Journal of Legislation and Public Policy · 2025